beijing jiarui deyi environmental protection technology co., ltd. specializes in the management of sound insulation and noise reduction projects, noise management, noise reduction treatment, sound insulation treatment, cooling tower noise management, air conditioning noise management, air conditioning noise management, central air conditioning noise management, fan noise management, computer room noise management, pump noise management, sound insulation wall, sound insulation door, industrial noise management, workshop noise management and other types of vibration noise management.